The values of $x$ and $y$ for which vectors $\vec{A} = (6\hat{i} + x\hat{j} - 2\hat{k})$ and $\vec{B} = (5\hat{i} - 6\hat{j} - y\hat{k})$ may be parallel are

  • A
    $x = 0, y = \frac{2}{3}$
  • B
    $x = -\frac{36}{5}, y = \frac{5}{3}$
  • C
    $x = -\frac{15}{3}, y = \frac{23}{5}$
  • D
    $x = \frac{36}{5}, y = \frac{15}{4}$

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Which of the following quantity/quantities are dependent on the choice of orientation of the co-ordinate axes?
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$ABC$ is an equilateral triangle. The length of each side is $a$ and the centroid is point $O$. If $\overrightarrow{AB} + \overrightarrow{AC} = n \overrightarrow{AO}$,then find the value of $n$.

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State the important condition for the addition of vectors.

Mark the correct statement :-

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